Buffing-roll for boots or shoes



(No Model.)

- 0. K. BRADFORD.

BUFFING ROLL FOR BOOTS 0R SHOES.

No. 334,162. Patented Jan. 12,1886.

NITE STATES onARLEs K. BRADFORD, OF LYNNFIELD, ASSIGNOR To GEORGE H. P.

FLAGG, TRUSTEE, OF BOSTON, MASsAoHuSETTS.

BUFFlNG-ROLL FOR BOOTS OR SHOES.

SEECIFICATION forming part of Letters Patent No. 334,162, dated January12, 1886.

Application filed March 23, 1884. Serial No. 125,889. (No model.)

To all whom, it may concern:

Be it known that I, CHARLES K. BRAD- I FORD, of Lynnfield, in the countyof Essex and State of Massachusetts, have invented a new and useful Rollfor Machines for Buffing Boot and Shoe Soles, of which the following isa specification, reference being bad to the accompanying drawings, inwhich- Figure l is a longitudinal Section. Fig. 2 is a sectional endview on line m w of Fig. 1. Fig. 3 is a detail enlarged.

In the drawings, A represents the central portion of the roll, which,for a certain class of machines for buffing the Soles of boots andshoes, is best made as a Shell or hollow cylinder of metal, grooved, asshown,to receive the springs B. On these springs are a series of rings,D, arranged, as shown, between the two end pieces, F F. The rings D arepreferably made of metal. These rings together make up a hollowcylinder, and constitute the yielding portion or cushion of the roll,and all that is essential is, that they should be able to yield withincertain limits While revolving'rapidly with the core A, my inventionconsisting in a roll whose cushion or yielding part is a hollow cylinderof an internal diameter materially larger than the rigid central part ofthe roll, which does not yield.

Heretol'ore in rolls of this class a cushion of felt, rubber, or thelike has been used; and the main purpose of my invention is to do awaywith the use of such a cushion and get the required elasticity by meansof rings, each so mounted that it can yield with reference to the axisof the roll.

It will be obvious from inspection of Fig. 2 that various means may beused for mounting the rings D so that they will be normally concentricwith the core A of the roll, and yet readily yield to pressure; but whenthe rings D are numerous and thin, as shown in the drawings-which Showthe best form of my new roll--I prefer to mount each ring on a series ofsprings, B, and these springs are most conveniently made by bending asheet of steelinto the form shown in outline in Fig. 2, and thenslitting this piece of steel so as to form a tooth or spring for eachring, although obviously one tooth or a separate spring may support morethan one ring, two or more rings on each spring being substantially theequivalent of a thicker ring.

When it is desired that the yielding cylinder or cushion made up of therings D shall substantially fit a surface curved as is the sole of ashoe, the rings should be about one-eighth of an inch thick; but forother work they may be made thicker, for, as will be clear, my inventionis applicable generally, and not limited to use for abrading the bottomsof soles.

The roll shown in the drawings is designed for use with an abrasivebelt, and to be revolved by the belt in a manner too well known to needdescription.

I prefer radial springs in this class of rolls; but in some casesSprings which are substantially parallel with the axis of the roll maybe used.

My roll may be used with the sheath or cover commonly used with rollscushioned with felt or without a cover.

What I claim as my invention is The roll above described, consisting ofthe core A, springs B, and rings D, arranged substantially as shown, theinterior diameter of the rings being such that the rings form a yieldingcushion.

' CHAS. K. BRADFORD. Witnesses:

J. E. MAYNADIER, J OHN R. SNow.

